.header {
  width: 100%;
  position: fixed;
  top: 0;
  box-shadow: 0 1px 8px 0 rgba(0, 0, 0, 0.1);
  z-index: 10;
}
.header .navbar-container {
  box-sizing: border-box;
  min-width: 1040px;
  height: 0.833333rem;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}
.header .navbar-container .blog-title {
  font-size: 0.260417rem;
}
.header .navbar-container .navbar-menu {
  font-size: 0.3125rem;
}
.header .navbar-container .navbar-menu ul {
  display: flex;
}
.header .navbar-container .navbar-menu ul .active {
  color: #3eaf7c;
}
.header .navbar-container .navbar-menu ul li {
  width: 1.2rem;
  min-width: 80px;
  padding: 0 0.1rem;
  text-align: center;
  color: #242424;
  font-weight: 500;
  font-size: 0.15rem;
}
.header .navbar-container .navbar-menu ul li:hover {
  color: #3eaf7c;
}
.null-box {
  width: 100%;
  height: 60px;
  margin-bottom: 10px;
}
.back-to-top {
  position: fixed;
  width: 0.78125rem;
  height: 0.78125rem;
  display: flex;
  justify-content: center;
  align-items: center;
  right: 30px;
  bottom: -50px;
  border-radius: 50%;
  font-size: 30px;
  color: #3eaf7c;
  cursor: pointer;
  box-shadow: 0 1px 8px 0 rgba(0, 0, 0, 0.1);
}
.back-to-top i {
  font-size: 0.260417rem;
}
.back-to-top:hover {
  box-shadow: 0 2px 16px 0 rgba(0, 0, 0, 0.25);
}
